Chloranthy Ring +1
Treasure in Shaded Woods. Upon entering the misty forest, hug the right wall until you come across a chest, the ring is past this chest, following the right border/wall to a slope that leads upwards to find it in a chest.

Chloranthy Ring +2
Dropped by the Executioner's Chariot at the Undead Purgatory bonfire at Bonfire Intensity 2 and above.